[p5sagit/p5-mst-13.2.git] / ext / Encode / Encode.xs

/*
 $Id: Encode.xs,v 1.41 2002/04/27 18:59:50 dankogai Exp $
 */

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define U8 U8
#include "encode.h"

# define PERLIO_MODNAME  "PerlIO::encoding"
# define PERLIO_FILENAME "PerlIO/encoding.pm"

/* set 1 or more to profile.  t/encoding.t dumps core because of
   Perl_warner and PerlIO don't work well */
#define ENCODE_XS_PROFILE 0 

/* set 0 to disable floating point to calculate buffer size for
   encode_method().  1 is recommended. 2 restores NI-S original */
#define ENCODE_XS_USEFP   1 

#define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX;   \
                         Perl_croak(aTHX_ "panic_unimplemented"); \
			 return (y)0; /* fool picky compilers */ \
                         }
/**/

UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)

void
Encode_XSEncoding(pTHX_ encode_t * enc)
{
    dSP;
    HV *stash = gv_stashpv("Encode::XS", TRUE);
    SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
    int i = 0;
    PUSHMARK(sp);
    XPUSHs(sv);
    while (enc->name[i]) {
	const char *name = enc->name[i++];
	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
    }
    PUTBACK;
    call_pv("Encode::define_encoding", G_DISCARD);
    SvREFCNT_dec(sv);
}

void
call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
{
    /* Exists for breakpointing */
}


static SV *
encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
	      int check)
{
    STRLEN slen;
    U8 *s = (U8 *) SvPV(src, slen);
    STRLEN tlen  = slen;
    STRLEN ddone = 0;
    STRLEN sdone = 0;

    /* We allocate slen+1.
       PerlIO dumps core if this value is smaller than this. */
    SV *dst = sv_2mortal(newSV(slen+1));
    U8 *d = (U8 *)SvPVX(dst);
    STRLEN dlen = SvLEN(dst)-1;
    int code;

    if (!slen){
	SvCUR_set(dst, 0);
	SvPOK_only(dst);
	goto ENCODE_END;
    }

    while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
    {
	SvCUR_set(dst, dlen+ddone);
	SvPOK_only(dst);
	
	if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL){
	    break;
	}
	switch (code) {
	case ENCODE_NOSPACE:
	{	
	    STRLEN more = 0; /* make sure you initialize! */
	    STRLEN sleft;
	    sdone += slen;
	    ddone += dlen;
	    sleft = tlen - sdone;
#if ENCODE_XS_PROFILE >= 2
	    Perl_warn(aTHX_
		      "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
		      more, sdone, sleft, SvLEN(dst));
#endif
	    if (sdone != 0) { /* has src ever been processed ? */
#if   ENCODE_XS_USEFP == 2
		more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone
		    - SvLEN(dst);
#elif ENCODE_XS_USEFP
		more = (1.0*SvLEN(dst)+1)/sdone * sleft;
#else
		/* safe until SvLEN(dst) == MAX_INT/16 */
		more = (16*SvLEN(dst)+1)/sdone/16 * sleft;
#endif
	    }
	    more += UTF8_MAXLEN; /* insurance policy */
	    d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	    /* dst need to grow need MORE bytes! */
	    if (ddone >= SvLEN(dst)) {
		Perl_croak(aTHX_ "Destination couldn't be grown.");
	    }
	    dlen = SvLEN(dst)-ddone-1;
	    d   += ddone;
	    s   += slen;
	    slen = tlen-sdone;
	    continue;
	}
	case ENCODE_NOREP:
	    /* encoding */	
	    if (dir == enc->f_utf8) { 
		STRLEN clen;
		UV ch =
		    utf8n_to_uvuni(s+slen, (SvCUR(src)-slen), 
				   &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
		if (check & ENCODE_DIE_ON_ERR) {
		    Perl_croak(
			aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d", 
			ch, enc->name[0], __LINE__);
		}else{
		    if (check & ENCODE_RETURN_ON_ERR){
			if (check & ENCODE_WARN_ON_ERR){
			    Perl_warner(
				aTHX_ packWARN(WARN_UTF8),
				"\"\\N{U+%" UVxf "}\" does not map to %s", 
				ch,enc->name[0]);
			}
       			goto ENCODE_SET_SRC;
		    }else if (check & ENCODE_PERLQQ){
			SV* perlqq = 
			    sv_2mortal(newSVpvf("\\x{%04"UVxf"}", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(perlqq);
			sv_catsv(dst, perlqq);
		    }else if (check & ENCODE_HTMLCREF){
			SV* htmlcref = 
			    sv_2mortal(newSVpvf("&#%" UVuf ";", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(htmlcref);
			sv_catsv(dst, htmlcref);
		    }else if (check & ENCODE_XMLCREF){
			SV* xmlcref = 
			    sv_2mortal(newSVpvf("&#x%" UVxf ";", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(xmlcref);
			sv_catsv(dst, xmlcref);
		    } else { 
			/* fallback char */
			sdone += slen + clen;
			ddone += dlen + enc->replen; 
			sv_catpvn(dst, (char*)enc->rep, enc->replen); 
		    }			
		} 
	    }
	    /* decoding */
	    else {           
		if (check & ENCODE_DIE_ON_ERR){
		    Perl_croak(
			aTHX_ "%s \"\\x%02" UVXf 
			"\" does not map to Unicode (%d)",
			enc->name[0], (U8) s[slen], code);
		}else{
		    if (check & ENCODE_RETURN_ON_ERR){
			if (check & ENCODE_WARN_ON_ERR){
			    Perl_warner(
				aTHX_ packWARN(WARN_UTF8),
				"%s \"\\x%02" UVXf 
				"\" does not map to Unicode (%d)",
				enc->name[0], (U8) s[slen], code);
			}
			goto ENCODE_SET_SRC;
		    }else if (check & 
			      (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
			SV* perlqq = 
			    sv_2mortal(newSVpvf("\\x%02" UVXf, s[slen]));
			sdone += slen + 1;
			ddone += dlen + SvCUR(perlqq);
			sv_catsv(dst, perlqq);
		    } else {
			sdone += slen + 1;
			ddone += dlen + strlen(FBCHAR_UTF8); 
			sv_catpv(dst, FBCHAR_UTF8); 
		    }
		}
	    }
	    /* settle variables when fallback */
	    d    = (U8 *)SvEND(dst);
            dlen = SvLEN(dst) - ddone - 1;
	    s    = (U8*)SvPVX(src) + sdone; 
	    slen = tlen - sdone;
	    break;

	default:
	    Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
		       code, (dir == enc->f_utf8) ? "to" : "from",
		       enc->name[0]);
	    return &PL_sv_undef;
	}
    }
 ENCODE_SET_SRC:
    if (check && !(check & ENCODE_LEAVE_SRC)){
	sdone = SvCUR(src) - (slen+sdone);
	if (sdone) {
	    sv_setpvn(src, (char*)s+slen, sdone);
	}
	SvCUR_set(src, sdone);
    }
    /* warn("check = 0x%X, code = 0x%d\n", check, code); */
    
    SvCUR_set(dst, dlen+ddone);
    SvPOK_only(dst);
    
#if ENCODE_XS_PROFILE
    if (SvCUR(dst) > SvCUR(src)){
	Perl_warn(aTHX_
		  "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
		  SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
		  (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0);
    }
#endif
    
 ENCODE_END:
    *SvEND(dst) = '\0';
    return dst;
}

MODULE = Encode		PACKAGE = Encode::XS	PREFIX = Method_

PROTOTYPES: ENABLE

void
Method_name(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
    XSRETURN(1);
}

void
Method_decode(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
    SvUTF8_on(ST(0));
    XSRETURN(1);
}

void
Method_encode(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    sv_utf8_upgrade(src);
    ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
    XSRETURN(1);
}

void
Method_needs_lines(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = &PL_sv_no;
    XSRETURN(1);
}

void
Method_perlio_ok(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    /* require_pv(PERLIO_FILENAME); */

    eval_pv("require PerlIO::encoding", 0);

    if (SvTRUE(get_sv("@", 0))) {
	ST(0) = &PL_sv_no;
    }else{
	ST(0) = &PL_sv_yes;
    }
    XSRETURN(1);
}

MODULE = Encode         PACKAGE = Encode

PROTOTYPES: ENABLE

I32
_bytes_to_utf8(sv, ...)
SV *    sv
CODE:
{
    SV * encoding = items == 2 ? ST(1) : Nullsv;
    
    if (encoding)
    RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
    else {
	STRLEN len;
	U8*    s = (U8*)SvPV(sv, len);
	U8*    converted;

	converted = bytes_to_utf8(s, &len); /* This allocs */
	sv_setpvn(sv, (char *)converted, len);
	SvUTF8_on(sv); /* XXX Should we? */
	Safefree(converted);                /* ... so free it */
	RETVAL = len;
    }
}
OUTPUT:
    RETVAL

I32
_utf8_to_bytes(sv, ...)
SV *    sv
CODE:
{
    SV * to    = items > 1 ? ST(1) : Nullsv;
    SV * check = items > 2 ? ST(2) : Nullsv;

    if (to) {
	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
    } else {
	STRLEN len;
	U8 *s = (U8*)SvPV(sv, len);

	RETVAL = 0;
	if (SvTRUE(check)) {
	    /* Must do things the slow way */
	    U8 *dest;
            /* We need a copy to pass to check() */
	    U8 *src  = (U8*)savepv((char *)s); 
	    U8 *send = s + len;

	    New(83, dest, len, U8); /* I think */

	    while (s < send) {
                if (*s < 0x80){
		    *dest++ = *s++;
                } else {
		    STRLEN ulen;
		    UV uv = *s++;

		    /* Have to do it all ourselves because of error routine,
		       aargh. */
		    if (!(uv & 0x40)){ goto failure; }
		    if      (!(uv & 0x20)) { ulen = 2;  uv &= 0x1f; }
		    else if (!(uv & 0x10)) { ulen = 3;  uv &= 0x0f; }
		    else if (!(uv & 0x08)) { ulen = 4;  uv &= 0x07; }
		    else if (!(uv & 0x04)) { ulen = 5;  uv &= 0x03; }
		    else if (!(uv & 0x02)) { ulen = 6;  uv &= 0x01; }
		    else if (!(uv & 0x01)) { ulen = 7;  uv = 0; }
		    else                   { ulen = 13; uv = 0; }
		
		    /* Note change to utf8.c variable naming, for variety */
		    while (ulen--) {
			if ((*s & 0xc0) != 0x80){ 
			    goto failure; 
			} else {
			    uv = (uv << 6) | (*s++ & 0x3f);
			}
		  }
		  if (uv > 256) {
		  failure:
		      call_failure(check, s, dest, src);
		      /* Now what happens? */
		  }
		  *dest++ = (U8)uv;
		}
	    }
	} else {
	    RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
	}
    }
}
OUTPUT:
    RETVAL

bool
is_utf8(sv, check = 0)
SV *	sv
int	check
CODE:
{
    if (SvGMAGICAL(sv)) /* it could be $1, for example */
	sv = newSVsv(sv); /* GMAGIG will be done */
    if (SvPOK(sv)) {
	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	if (RETVAL &&
	    check  &&
	    !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
	    RETVAL = FALSE;
    } else {
	RETVAL = FALSE;
    }
    if (sv != ST(0))
	SvREFCNT_dec(sv); /* it was a temp copy */
}
OUTPUT:
    RETVAL

SV *
_utf8_on(sv)
SV *	sv
CODE:
{
    if (SvPOK(sv)) {
	SV *rsv = newSViv(SvUTF8(sv));
	RETVAL = rsv;
	SvUTF8_on(sv);
    } else {
	RETVAL = &PL_sv_undef;
    }
}
OUTPUT:
    RETVAL

SV *
_utf8_off(sv)
SV *	sv
CODE:
{
    if (SvPOK(sv)) {
	SV *rsv = newSViv(SvUTF8(sv));
	RETVAL = rsv;
	SvUTF8_off(sv);
    } else {
	RETVAL = &PL_sv_undef;
    }
}
OUTPUT:
    RETVAL

int
DIE_ON_ERR()
CODE:
    RETVAL = ENCODE_DIE_ON_ERR;
OUTPUT:
    RETVAL

int 
WARN_ON_ERR()
CODE:
    RETVAL = ENCODE_WARN_ON_ERR;
OUTPUT:
    RETVAL

int
LEAVE_SRC()
CODE:
    RETVAL = ENCODE_LEAVE_SRC;
OUTPUT:
    RETVAL

int
RETURN_ON_ERR()
CODE:
    RETVAL = ENCODE_RETURN_ON_ERR;
OUTPUT:
    RETVAL

int
PERLQQ()
CODE:
    RETVAL = ENCODE_PERLQQ;
OUTPUT:
    RETVAL

int
HTMLCREF()
CODE:
    RETVAL = ENCODE_HTMLCREF;
OUTPUT:
    RETVAL

int
XMLCREF()
CODE:
    RETVAL = ENCODE_XMLCREF;
OUTPUT:
    RETVAL

int
FB_DEFAULT()
CODE:
    RETVAL = ENCODE_FB_DEFAULT;
OUTPUT:
    RETVAL

int
FB_CROAK()
CODE:
    RETVAL = ENCODE_FB_CROAK;
OUTPUT:
    RETVAL

int
FB_QUIET()
CODE:
    RETVAL = ENCODE_FB_QUIET;
OUTPUT:
    RETVAL

int
FB_WARN()
CODE:
    RETVAL = ENCODE_FB_WARN;
OUTPUT:
    RETVAL

int
FB_PERLQQ()
CODE:
    RETVAL = ENCODE_FB_PERLQQ;
OUTPUT:
    RETVAL

int
FB_HTMLCREF()
CODE:
    RETVAL = ENCODE_FB_HTMLCREF;
OUTPUT:
    RETVAL

int
FB_XMLCREF()
CODE:
    RETVAL = ENCODE_FB_XMLCREF;
OUTPUT:
    RETVAL

BOOT:
{
#include "def_t.h"
#include "def_t.exh"
}
Commit	Line	Data
85982a32	1	/*
10c5ecbb	2	$Id: Encode.xs,v 1.41 2002/04/27 18:59:50 dankogai Exp $
85982a32	3	*/
85982a32	4
fcf2db38	5	#define PERL_NO_GET_CONTEXT
2c674647	6	#include "EXTERN.h"
	7	#include "perl.h"
	8	#include "XSUB.h"
2f2b4ff2	9	#define U8 U8
2f2b4ff2	10	#include "encode.h"
10c5ecbb	11
10c5ecbb	12	# define PERLIO_MODNAME "PerlIO::encoding"
0ab8f81e	13	# define PERLIO_FILENAME "PerlIO/encoding.pm"
aae85ceb	14
85982a32	15	/* set 1 or more to profile. t/encoding.t dumps core because of
85982a32	16	Perl_warner and PerlIO don't work well */
0ab8f81e	17	#define ENCODE_XS_PROFILE 0
39cf9a5e	18
85982a32	19	/* set 0 to disable floating point to calculate buffer size for
85982a32	20	encode_method(). 1 is recommended. 2 restores NI-S original */
0ab8f81e	21	#define ENCODE_XS_USEFP 1
39cf9a5e	22
fcf2db38	23	#define UNIMPLEMENTED(x,y) y x (SV sv, char encoding) {dTHX; \
2f5768b8	24	Perl_croak(aTHX_ "panic_unimplemented"); \
4a83738a	25	return (y)0; /* fool picky compilers */ \
87714904	26	}
85982a32	27	/**/
011b2d2f	28
7e9a885a	29	UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
7e9a885a	30	UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
33af2bc7	31
b0b300a3	32	void
aa0053b7	33	Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2	34	{
aa0053b7	35	dSP;
	36	HV *stash = gv_stashpv("Encode::XS", TRUE);
	37	SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
	38	int i = 0;
	39	PUSHMARK(sp);
	40	XPUSHs(sv);
	41	while (enc->name[i]) {
	42	const char *name = enc->name[i++];
	43	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
	44	}
	45	PUTBACK;
	46	call_pv("Encode::define_encoding", G_DISCARD);
	47	SvREFCNT_dec(sv);
2f2b4ff2	48	}
2f2b4ff2	49
aa0053b7	50	void
	51	call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
	52	{
85982a32	53	/* Exists for breakpointing */
aa0053b7	54	}
67e989fb	55
85982a32	56
2f2b4ff2	57	static SV *
aa0053b7	58	encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
85982a32	59	int check)
2f2b4ff2	60	{
aa0053b7	61	STRLEN slen;
aa0053b7	62	U8 s = (U8 ) SvPV(src, slen);
3aececda	63	STRLEN tlen = slen;
	64	STRLEN ddone = 0;
	65	STRLEN sdone = 0;
39cf9a5e	66
3c49ab08	67	/* We allocate slen+1.
85982a32	68	PerlIO dumps core if this value is smaller than this. */
3c49ab08	69	SV *dst = sv_2mortal(newSV(slen+1));
85982a32	70	U8 d = (U8 )SvPVX(dst);
	71	STRLEN dlen = SvLEN(dst)-1;
	72	int code;
	73
	74	if (!slen){
	75	SvCUR_set(dst, 0);
	76	SvPOK_only(dst);
	77	goto ENCODE_END;
	78	}
	79
	80	while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
	81	{
	82	SvCUR_set(dst, dlen+ddone);
	83	SvPOK_only(dst);
0b3236bb	84
85982a32	85	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL){
	86	break;
	87	}
	88	switch (code) {
	89	case ENCODE_NOSPACE:
	90	{
	91	STRLEN more = 0; /* make sure you initialize! */
	92	STRLEN sleft;
	93	sdone += slen;
	94	ddone += dlen;
	95	sleft = tlen - sdone;
fcb875d4	96	#if ENCODE_XS_PROFILE >= 2
85982a32	97	Perl_warn(aTHX_
	98	"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
	99	more, sdone, sleft, SvLEN(dst));
fcb875d4	100	#endif
85982a32	101	if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e	102	#if ENCODE_XS_USEFP == 2
85982a32	103	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32	104	- SvLEN(dst);
39cf9a5e	105	#elif ENCODE_XS_USEFP
85982a32	106	more = (1.0SvLEN(dst)+1)/sdone sleft;
39cf9a5e	107	#else
85982a32	108	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32	109	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	110	#endif
39cf9a5e	111	}
85982a32	112	more += UTF8_MAXLEN; /* insurance policy */
	113	d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	114	/* dst need to grow need MORE bytes! */
	115	if (ddone >= SvLEN(dst)) {
	116	Perl_croak(aTHX_ "Destination couldn't be grown.");
	117	}
	118	dlen = SvLEN(dst)-ddone-1;
	119	d += ddone;
	120	s += slen;
	121	slen = tlen-sdone;
	122	continue;
	123	}
	124	case ENCODE_NOREP:
	125	/* encoding */
0ab8f81e	126	if (dir == enc->f_utf8) {
85982a32	127	STRLEN clen;
85982a32	128	UV ch =
0ab8f81e	129	utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
b0b300a3	130	&clen, UTF8_ALLOW_ANY\|UTF8_CHECK_ONLY);
85982a32	131	if (check & ENCODE_DIE_ON_ERR) {
85982a32	132	Perl_croak(
0ab8f81e	133	aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d",
85982a32	134	ch, enc->name[0], __LINE__);
	135	}else{
	136	if (check & ENCODE_RETURN_ON_ERR){
	137	if (check & ENCODE_WARN_ON_ERR){
	138	Perl_warner(
	139	aTHX_ packWARN(WARN_UTF8),
0ab8f81e	140	"\"\\N{U+%" UVxf "}\" does not map to %s",
85982a32	141	ch,enc->name[0]);
	142	}
	143	goto ENCODE_SET_SRC;
	144	}else if (check & ENCODE_PERLQQ){
0ab8f81e	145	SV* perlqq =
e4da7dce	146	sv_2mortal(newSVpvf("\\x{%04"UVxf"}", ch));
b2704119	147	sdone += slen + clen;
85982a32	148	ddone += dlen + SvCUR(perlqq);
85982a32	149	sv_catsv(dst, perlqq);
af1f55d9	150	}else if (check & ENCODE_HTMLCREF){
af1f55d9	151	SV* htmlcref =
7e19fb92	152	sv_2mortal(newSVpvf("&#%" UVuf ";", ch));
af1f55d9	153	sdone += slen + clen;
	154	ddone += dlen + SvCUR(htmlcref);
	155	sv_catsv(dst, htmlcref);
	156	}else if (check & ENCODE_XMLCREF){
	157	SV* xmlcref =
	158	sv_2mortal(newSVpvf("&#x%" UVxf ";", ch));
	159	sdone += slen + clen;
	160	ddone += dlen + SvCUR(xmlcref);
	161	sv_catsv(dst, xmlcref);
0ab8f81e	162	} else {
85982a32	163	/* fallback char */
85982a32	164	sdone += slen + clen;
0ab8f81e	165	ddone += dlen + enc->replen;
0ab8f81e	166	sv_catpvn(dst, (char*)enc->rep, enc->replen);
b2704119	167	}
0ab8f81e	168	}
b2704119	169	}
85982a32	170	/* decoding */
0ab8f81e	171	else {
85982a32	172	if (check & ENCODE_DIE_ON_ERR){
85982a32	173	Perl_croak(
fc17bd48	174	aTHX_ "%s \"\\x%02" UVXf
fc17bd48	175	"\" does not map to Unicode (%d)",
85982a32	176	enc->name[0], (U8) s[slen], code);
	177	}else{
	178	if (check & ENCODE_RETURN_ON_ERR){
	179	if (check & ENCODE_WARN_ON_ERR){
	180	Perl_warner(
	181	aTHX_ packWARN(WARN_UTF8),
fc17bd48	182	"%s \"\\x%02" UVXf
fc17bd48	183	"\" does not map to Unicode (%d)",
85982a32	184	enc->name[0], (U8) s[slen], code);
	185	}
	186	goto ENCODE_SET_SRC;
af1f55d9	187	}else if (check &
af1f55d9	188	(ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
0ab8f81e	189	SV* perlqq =
fc17bd48	190	sv_2mortal(newSVpvf("\\x%02" UVXf, s[slen]));
85982a32	191	sdone += slen + 1;
	192	ddone += dlen + SvCUR(perlqq);
	193	sv_catsv(dst, perlqq);
	194	} else {
	195	sdone += slen + 1;
0ab8f81e	196	ddone += dlen + strlen(FBCHAR_UTF8);
0ab8f81e	197	sv_catpv(dst, FBCHAR_UTF8);
85982a32	198	}
aa0053b7	199	}
b2704119	200	}
85982a32	201	/* settle variables when fallback */
b0b300a3	202	d = (U8 *)SvEND(dst);
0ab8f81e	203	dlen = SvLEN(dst) - ddone - 1;
0ab8f81e	204	s = (U8*)SvPVX(src) + sdone;
b2704119	205	slen = tlen - sdone;
b2704119	206	break;
2f2b4ff2	207
85982a32	208	default:
	209	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	210	code, (dir == enc->f_utf8) ? "to" : "from",
	211	enc->name[0]);
	212	return &PL_sv_undef;
aa0053b7	213	}
85982a32	214	}
85982a32	215	ENCODE_SET_SRC:
6d1c0808	216	if (check && !(check & ENCODE_LEAVE_SRC)){
6d1c0808	217	sdone = SvCUR(src) - (slen+sdone);
85982a32	218	if (sdone) {
85982a32	219	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	220	}
85982a32	221	SvCUR_set(src, sdone);
2f2b4ff2	222	}
85982a32	223	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
0ab8f81e	224
85982a32	225	SvCUR_set(dst, dlen+ddone);
85982a32	226	SvPOK_only(dst);
0ab8f81e	227
39cf9a5e	228	#if ENCODE_XS_PROFILE
39cf9a5e	229	if (SvCUR(dst) > SvCUR(src)){
85982a32	230	Perl_warn(aTHX_
	231	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	232	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	233	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	234	}
3c49ab08	235	#endif
0ab8f81e	236
85982a32	237	ENCODE_END:
0b3236bb	238	*SvEND(dst) = '\0';
aa0053b7	239	return dst;
2f2b4ff2	240	}
2f2b4ff2	241
50d26985	242	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2	243
	244	PROTOTYPES: ENABLE
	245
	246	void
0a95303c	247	Method_name(obj)
	248	SV * obj
	249	CODE:
85982a32	250	{
	251	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	252	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	253	XSRETURN(1);
	254	}
0a95303c	255
0a95303c	256	void
b2704119	257	Method_decode(obj,src,check = 0)
2f2b4ff2	258	SV * obj
2f2b4ff2	259	SV * src
b2704119	260	int check
2f2b4ff2	261	CODE:
aae85ceb	262	{
85982a32	263	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	264	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
	265	SvUTF8_on(ST(0));
aae85ceb	266	XSRETURN(1);
	267	}
	268
	269	void
85982a32	270	Method_encode(obj,src,check = 0)
aae85ceb	271	SV * obj
85982a32	272	SV * src
85982a32	273	int check
aae85ceb	274	CODE:
aae85ceb	275	{
85982a32	276	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	277	sv_utf8_upgrade(src);
	278	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
aae85ceb	279	XSRETURN(1);
	280	}
	281
0ab8f81e	282	void
	283	Method_needs_lines(obj)
	284	SV * obj
	285	CODE:
	286	{
	287	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	288	ST(0) = &PL_sv_no;
	289	XSRETURN(1);
	290	}
	291
	292	void
	293	Method_perlio_ok(obj)
	294	SV * obj
	295	CODE:
	296	{
	297	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
10c5ecbb	298	/* require_pv(PERLIO_FILENAME); */
	299
	300	eval_pv("require PerlIO::encoding", 0);
	301
	302	if (SvTRUE(get_sv("@", 0))) {
0ab8f81e	303	ST(0) = &PL_sv_no;
10c5ecbb	304	}else{
10c5ecbb	305	ST(0) = &PL_sv_yes;
0ab8f81e	306	}
	307	XSRETURN(1);
	308	}
	309
67e989fb	310	MODULE = Encode PACKAGE = Encode
2c674647	311
	312	PROTOTYPES: ENABLE
	313
67e989fb	314	I32
2c674647	315	_bytes_to_utf8(sv, ...)
85982a32	316	SV * sv
	317	CODE:
	318	{
	319	SV * encoding = items == 2 ? ST(1) : Nullsv;
0ab8f81e	320
85982a32	321	if (encoding)
	322	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	323	else {
	324	STRLEN len;
	325	U8* s = (U8*)SvPV(sv, len);
	326	U8* converted;
	327
	328	converted = bytes_to_utf8(s, &len); /* This allocs */
	329	sv_setpvn(sv, (char *)converted, len);
	330	SvUTF8_on(sv); /* XXX Should we? */
	331	Safefree(converted); /* ... so free it */
	332	RETVAL = len;
	333	}
	334	}
	335	OUTPUT:
	336	RETVAL
2c674647	337
67e989fb	338	I32
2c674647	339	_utf8_to_bytes(sv, ...)
85982a32	340	SV * sv
	341	CODE:
	342	{
	343	SV * to = items > 1 ? ST(1) : Nullsv;
	344	SV * check = items > 2 ? ST(2) : Nullsv;
	345
	346	if (to) {
	347	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	348	} else {
	349	STRLEN len;
	350	U8 s = (U8)SvPV(sv, len);
	351
	352	RETVAL = 0;
	353	if (SvTRUE(check)) {
	354	/* Must do things the slow way */
	355	U8 *dest;
	356	/* We need a copy to pass to check() */
0ab8f81e	357	U8 src = (U8)savepv((char *)s);
85982a32	358	U8 *send = s + len;
	359
	360	New(83, dest, len, U8); /* I think */
	361
	362	while (s < send) {
	363	if (*s < 0x80){
	364	dest++ = s++;
	365	} else {
	366	STRLEN ulen;
	367	UV uv = *s++;
	368
	369	/* Have to do it all ourselves because of error routine,
	370	aargh. */
	371	if (!(uv & 0x40)){ goto failure; }
	372	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	373	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	374	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	375	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	376	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	377	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	378	else { ulen = 13; uv = 0; }
87714904	379
85982a32	380	/* Note change to utf8.c variable naming, for variety */
85982a32	381	while (ulen--) {
0ab8f81e	382	if ((*s & 0xc0) != 0x80){
0ab8f81e	383	goto failure;
85982a32	384	} else {
	385	uv = (uv << 6) \| (*s++ & 0x3f);
	386	}
87714904	387	}
67e989fb	388	if (uv > 256) {
67e989fb	389	failure:
85982a32	390	call_failure(check, s, dest, src);
85982a32	391	/* Now what happens? */
67e989fb	392	}
67e989fb	393	*dest++ = (U8)uv;
85982a32	394	}
	395	}
	396	} else {
	397	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	398	}
85982a32	399	}
	400	}
	401	OUTPUT:
	402	RETVAL
2c674647	403
2c674647	404	bool
b2704119	405	is_utf8(sv, check = 0)
4411f3b6	406	SV * sv
b2704119	407	int check
85982a32	408	CODE:
	409	{
	410	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	411	sv = newSVsv(sv); /* GMAGIG will be done */
	412	if (SvPOK(sv)) {
	413	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	414	if (RETVAL &&
	415	check &&
	416	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	417	RETVAL = FALSE;
85982a32	418	} else {
	419	RETVAL = FALSE;
	420	}
	421	if (sv != ST(0))
	422	SvREFCNT_dec(sv); /* it was a temp copy */
	423	}
	424	OUTPUT:
	425	RETVAL
2c674647	426
2c674647	427	SV *
4411f3b6	428	_utf8_on(sv)
85982a32	429	SV * sv
	430	CODE:
	431	{
	432	if (SvPOK(sv)) {
	433	SV *rsv = newSViv(SvUTF8(sv));
	434	RETVAL = rsv;
	435	SvUTF8_on(sv);
	436	} else {
	437	RETVAL = &PL_sv_undef;
	438	}
	439	}
	440	OUTPUT:
	441	RETVAL
2c674647	442
2c674647	443	SV *
4411f3b6	444	_utf8_off(sv)
85982a32	445	SV * sv
	446	CODE:
	447	{
	448	if (SvPOK(sv)) {
	449	SV *rsv = newSViv(SvUTF8(sv));
	450	RETVAL = rsv;
	451	SvUTF8_off(sv);
	452	} else {
	453	RETVAL = &PL_sv_undef;
	454	}
	455	}
	456	OUTPUT:
	457	RETVAL
	458
85982a32	459	int
	460	DIE_ON_ERR()
	461	CODE:
	462	RETVAL = ENCODE_DIE_ON_ERR;
	463	OUTPUT:
	464	RETVAL
	465
0ab8f81e	466	int
85982a32	467	WARN_ON_ERR()
	468	CODE:
	469	RETVAL = ENCODE_WARN_ON_ERR;
	470	OUTPUT:
	471	RETVAL
	472
	473	int
	474	LEAVE_SRC()
	475	CODE:
	476	RETVAL = ENCODE_LEAVE_SRC;
	477	OUTPUT:
	478	RETVAL
	479
	480	int
	481	RETURN_ON_ERR()
	482	CODE:
	483	RETVAL = ENCODE_RETURN_ON_ERR;
	484	OUTPUT:
	485	RETVAL
	486
	487	int
	488	PERLQQ()
	489	CODE:
	490	RETVAL = ENCODE_PERLQQ;
	491	OUTPUT:
	492	RETVAL
	493
	494	int
af1f55d9	495	HTMLCREF()
	496	CODE:
	497	RETVAL = ENCODE_HTMLCREF;
	498	OUTPUT:
	499	RETVAL
	500
	501	int
	502	XMLCREF()
	503	CODE:
	504	RETVAL = ENCODE_XMLCREF;
	505	OUTPUT:
	506	RETVAL
	507
	508	int
85982a32	509	FB_DEFAULT()
	510	CODE:
	511	RETVAL = ENCODE_FB_DEFAULT;
	512	OUTPUT:
	513	RETVAL
	514
	515	int
	516	FB_CROAK()
	517	CODE:
	518	RETVAL = ENCODE_FB_CROAK;
	519	OUTPUT:
	520	RETVAL
	521
	522	int
	523	FB_QUIET()
	524	CODE:
	525	RETVAL = ENCODE_FB_QUIET;
	526	OUTPUT:
	527	RETVAL
	528
	529	int
	530	FB_WARN()
	531	CODE:
	532	RETVAL = ENCODE_FB_WARN;
	533	OUTPUT:
	534	RETVAL
	535
	536	int
	537	FB_PERLQQ()
	538	CODE:
	539	RETVAL = ENCODE_FB_PERLQQ;
	540	OUTPUT:
	541	RETVAL
2c674647	542
af1f55d9	543	int
	544	FB_HTMLCREF()
	545	CODE:
	546	RETVAL = ENCODE_FB_HTMLCREF;
	547	OUTPUT:
	548	RETVAL
	549
	550	int
	551	FB_XMLCREF()
	552	CODE:
	553	RETVAL = ENCODE_FB_XMLCREF;
	554	OUTPUT:
	555	RETVAL
	556
33af2bc7	557	BOOT:
33af2bc7	558	{
85982a32	559	#include "def_t.h"
e7cbefb8	560	#include "def_t.exh"
33af2bc7	561	}